EP1674232B1 - Procédé de fabrication d'un embout - Google Patents

Procédé de fabrication d'un embout Download PDF

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Publication number
EP1674232B1
EP1674232B1 EP05023834A EP05023834A EP1674232B1 EP 1674232 B1 EP1674232 B1 EP 1674232B1 EP 05023834 A EP05023834 A EP 05023834A EP 05023834 A EP05023834 A EP 05023834A EP 1674232 B1 EP1674232 B1 EP 1674232B1
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EP
European Patent Office
Prior art keywords
layer
material arrangement
preform
arrangement
container
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
EP05023834A
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German (de)
English (en)
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EP1674232A3 (fr
EP1674232A2 (fr
Inventor
Janos Kertesz
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Norma Germany GmbH
Original Assignee
Norma Germany GmbH
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Publication date
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Priority to EP08017864A priority Critical patent/EP2030755B1/fr
Publication of EP1674232A2 publication Critical patent/EP1674232A2/fr
Publication of EP1674232A3 publication Critical patent/EP1674232A3/fr
Application granted granted Critical
Publication of EP1674232B1 publication Critical patent/EP1674232B1/fr
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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R43/00—Apparatus or processes specially adapted for manufacturing, assembling, maintaining, or repairing of line connectors or current collectors or for joining electric conductors
    • H01R43/16—Apparatus or processes specially adapted for manufacturing, assembling, maintaining, or repairing of line connectors or current collectors or for joining electric conductors for manufacturing contact members, e.g. by punching and by bending
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
    • B29C45/14—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor incorporating preformed parts or layers, e.g. injection moulding around inserts or for coating articles
    • B29C45/14778—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor incorporating preformed parts or layers, e.g. injection moulding around inserts or for coating articles the article consisting of a material with particular properties, e.g. porous, brittle
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C33/00—Moulds or cores; Details thereof or accessories therefor
    • B29C33/70—Maintenance
    • B29C33/72—Cleaning
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
    • B29C45/14—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor incorporating preformed parts or layers, e.g. injection moulding around inserts or for coating articles
    • B29C45/14467—Joining articles or parts of a single article
    • B29C45/14491—Injecting material between coaxial articles, e.g. between a core and an outside sleeve for making a roll
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
    • B29C45/16—Making multilayered or multicoloured articles
    • B29C45/1642—Making multilayered or multicoloured articles having a "sandwich" structure
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L47/00—Connecting arrangements or other fittings specially adapted to be made of plastics or to be used with pipes made of plastics
    • F16L47/26—Connecting arrangements or other fittings specially adapted to be made of plastics or to be used with pipes made of plastics for branching pipes; for joining pipes to walls; Adaptors therefor
    • F16L47/28—Joining pipes to walls or to other pipes, the axis of the joined pipe being perpendicular to the wall or to the axis of the other pipe
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
    • B29C45/14—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor incorporating preformed parts or layers, e.g. injection moulding around inserts or for coating articles
    • B29C45/1418—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor incorporating preformed parts or layers, e.g. injection moulding around inserts or for coating articles the inserts being deformed or preformed, e.g. by the injection pressure
    • B29C45/14221—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor incorporating preformed parts or layers, e.g. injection moulding around inserts or for coating articles the inserts being deformed or preformed, e.g. by the injection pressure by tools, e.g. cutting means
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
    • B29C45/14—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor incorporating preformed parts or layers, e.g. injection moulding around inserts or for coating articles
    • B29C45/14598—Coating tubular articles
    • B29C45/14622—Lining the inner or outer surface of tubular articles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
    • B29C45/16—Making multilayered or multicoloured articles
    • B29C45/1671—Making multilayered or multicoloured articles with an insert
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2995/00—Properties of moulding materials, reinforcements, fillers, preformed parts or moulds
    • B29K2995/0037—Other properties
    • B29K2995/0065—Permeability to gases
    • B29K2995/0067—Permeability to gases non-permeable
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
    • B29L2031/00—Other particular articles
    • B29L2031/24—Pipe joints or couplings
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
    • B29L2031/00—Other particular articles
    • B29L2031/712—Containers; Packaging elements or accessories, Packages
    • B29L2031/7172—Fuel tanks, jerry cans
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K15/00—Arrangement in connection with fuel supply of combustion engines or other fuel consuming energy converters, e.g. fuel cells; Mounting or construction of fuel tanks
    • B60K15/03—Fuel tanks
    • B60K15/03177—Fuel tanks made of non-metallic material, e.g. plastics, or of a combination of non-metallic and metallic material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K15/00—Arrangement in connection with fuel supply of combustion engines or other fuel consuming energy converters, e.g. fuel cells; Mounting or construction of fuel tanks
    • B60K15/03—Fuel tanks
    • B60K2015/03328—Arrangements or special measures related to fuel tanks or fuel handling
    • B60K2015/03453—Arrangements or special measures related to fuel tanks or fuel handling for fixing or mounting parts of the fuel tank together
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K15/00—Arrangement in connection with fuel supply of combustion engines or other fuel consuming energy converters, e.g. fuel cells; Mounting or construction of fuel tanks
    • B60K15/03—Fuel tanks
    • B60K2015/03328—Arrangements or special measures related to fuel tanks or fuel handling
    • B60K2015/03453—Arrangements or special measures related to fuel tanks or fuel handling for fixing or mounting parts of the fuel tank together
    • B60K2015/0346—Arrangements or special measures related to fuel tanks or fuel handling for fixing or mounting parts of the fuel tank together by welding

Definitions

  • the invention relates to a method for producing a nozzle for connecting a fluid conduit to a container made of thermoplastic material, wherein the nozzle has a first nozzle-shaped, at least single layer material arrangement and a second nozzle-shaped, at least single-layer material arrangement, of which the first material arrangement thinner than the second material arrangement is and both have at least predominantly thermally deformable material and enter into a fusion with each other, wherein in a first step, the first material arrangement by extrusion or injection molding is formed into a flat sheet or plate or a tube, in a second step, the film or Plate is formed by deep drawing or the tube by blow molding in a first preform with nozzle contour, in a third step on one side of the first preform, the second material arrangement in the injection molding, koi In the case of the first preform formed from the film or plate, the bottom thereof is cut out before, during or after the third step.
  • connection element may have the shape of a connecting piece and be formed in one or more layers.
  • the co-extruded multi-layer composite can be produced from a film, a plate or a tube, for example by blow molding or deep drawing. The coextruded multilayer composite can then be connected to the connection element by means of welding. But it is also possible to insert the coextruded multilayer composite in an injection mold and to inject with the material of the connection element.
  • GB 2 267 678 A discloses a method of manufacturing a nozzle having a tubular, two-layered first material assembly and a second nozzle-shaped material assembly.
  • the tubular shape of the first material arrangement is produced by means of blow molding.
  • the second material assembly is then placed around the first material assembly by injection molding.
  • the first and the second material arrangement may have nylon.
  • Nylon is a weldable plastic material.
  • the first material arrangement consists of two adjacent thin layers and the second material arrangement of an outer layer which is thicker than the two-layered first material arrangement and in essentially determines the mechanical strength of the nozzle.
  • the three layers are to be injected by the coinjection or monosandwich method.
  • it is extremely difficult to form the single-layered first material arrangement considerably thicker than the second material arrangement since then two layers of a total three-layered wall of a nozzle form a thin one- or two-part skin layer whose entire wall thickness is generally less than that of the core layer ,
  • the skin layer usually has a maximum thickness of about 2 mm when co-injected. If, for reasons of strength, the wall thickness of the connecting piece is for example about 10 mm and the thickest layer is to be on the outside, then such a layer arrangement can not practically be produced in the coinjection or monosandwich process.
  • the invention has for its object to provide a method of the type mentioned, in which the thickness and relative position of the layers at a given wall thickness of the nozzle is independent of the function of the layers largely freely selectable.
  • the second material arrangement comprises a core layer and a skin layer, which are produced by the coinjection or monosandwich method, and that the skin layer and the first material arrangement form a fusion connection (compatible), wherein the skin layer comprises PE and the core layer is a diffusion barrier to hydrocarbons comprising at least one of PA, EVOH, PET, PBT, PBN, PEN, POM, fluorothermoplastic and PPS.
  • the thicker material arrangement may form the radially outer or inner material arrangement of the nozzle, depending on whether the first preform for applying the second material arrangement on the correspondingly shaped inside of the outer wall of an injection molding or on the correspondingly shaped outer side of a core in the injection molding Forming tool is arranged.
  • the thickness of the gap between the first preform and the inside of the wall or the outside of the core of the mold is then selected accordingly.
  • the thickness of the first preform is selected during deep drawing or blow molding according to the desired wall thickness of the nozzle.
  • the material of the second material arrangement may be selected according to the desired strength and function of the second material arrangement, so that the second material arrangement serves on the one hand as a carrier of the first preform and on the other hand enters into a solid fusion or welding connection with the material of the container, preferably a Krattstoff-tank of a motor vehicle, and the first preform.
  • the material of the first preform may be selected to make a solid melt or weld connection with that of the second material assembly.
  • the core layer can - with a wall thickness of the neck of for example 10 mm and a thickness of only about 2 mm for the first material arrangement or the first preform - a thickness of 4 mm and the skin layer or the two skin layers lying on either side of the core layer (if the skin layer is divided by the core layer into two skin layers) each have the maximum thickness of 4 mm or 2 mm per skin layer on either side of the core layer.
  • the material of the skin layer (s) is PE and that of the core layer a diffusion barrier layer to hydrocarbons, which has at least one of the materials PA, EVOH, PET, PBT, PBN, PEN, POM, fluorothermoplastic and PPS.
  • first layer and a second layer, and optionally a third layer it is possible for a first layer and a second layer, and optionally a third layer, to be melt-bonded by the coextrusion process or layer by layer by injection molding to form the film, plate or tube.
  • one of the layers formed in the first step is an adhesion promoter or a diffusion barrier layer with respect to hydrocarbons which comprises at least one of the materials PA, EVOH, PE, PET, PBT, PBN, PEN, POM, PP, fluorothermoplastic, PPS and metal, and the second material arrangement is applied to the second layer and at least one of the materials PE, PP , PA, PBT, PET, PBN and POM.
  • Another of the layers formed in the first step preferably comprises one of the materials PA, EVOH, PE, PET, PBT, PBN, PEN, POM, PP, fluorothermoplastic, PPS and a thermoplastic layer rendered conductive by an electrically conductive additive.
  • the second material arrangement can be applied on the inside or the outside of the first preform.
  • the diffusion barrier layer may comprise a reinforcing material, in particular glass fibers.
  • the core layer may also comprise a reinforced material, eg PE or PP, reinforced by glass fibers, glass beads or mineral particles.
  • the (one-piece) skin layer is applied to the outside or inside of the first preform and the second material arrangement is formed in a first end portion to be connected to the container as a flange and in a second end portion outside with at least one retaining rib and that the core layer is injected into the ribbed end portion and to or into the flange.
  • the core layer formed as a diffusion barrier layer forms in this way at the same time a stiffening layer at least in the region between the ribbed end portion and the flange, since around this area, the pushed onto him fluid line is usually clamped by means of a hose clamp, so that this intermediate region the Einspanndruck the hose point must withstand without deforming.
  • the first material arrangement may also comprise a first layer and a second layer, which are respectively formed according to the first step and the second step to the first preform and a second preform, and in a third step, a first layer of the second material arrangement by injection molding between the first and the second preform are injected and in a fourth step in the still plastic core of the first layer of the second material arrangement, a third layer are injected, so that the first layer of the second material arrangement forms a skin layer and the third layer is a core layer.
  • the first step it is possible to form three layers of the first material assembly into the film, sheet or tube to form the first preform according to the second step and to form a second one formed by repeating steps 1-3 three-layer preform is placed together with the first three-layer preform in a mold while leaving a gap between the preforms and injected into the space the second material arrangement in the form of a skin layer and a core layer in Koinjetechnischs- or monosandwich method.
  • the nozzle has a first nozzle-shaped, three-layer material arrangement, which is at least predominantly made of thermoplastic material in Koinjemies- or monosandwich process, according to a second solution of the object according to the invention ensures that the skin layer of the first material arrangement with a second material arrangement, the at least predominantly made of thermoplastic material, which forms a fusion bond with the skin layer of the first material arrangement, is fused.
  • the first material arrangement may be formed as a preform thinner than the second material arrangement.
  • the second material arrangement can in this case be applied to the first material arrangement by injection molding, so that it has the required thickness, to give the neck the required rigidity.
  • a method for producing a nozzle for connecting a fluid line to a container made of thermoplastic material wherein the nozzle has a first, a second and a third rotationally symmetrical material arrangement, each consisting predominantly of thermoplastic material, wherein the first material arrangement is at least one layer is thinner than the second material assembly and surrounds the second material assembly, the third material assembly surrounds the first material assembly, the first, second and third material assemblies are fusion bonded and form a flange of the nozzle on the side of the container and the first material assembly and the second Material arrangement to reach a to be connected to the container surface of the flange.
  • a solution according to the invention of the object is that in a first step, the first material arrangement is formed by extrusion or injection molding into a flat sheet or plate or a tube, that in a second step
  • the inventive method is performed only in the region of the flange of the nozzle.
  • the first material arrangement comprises a diffusion barrier layer, the second material arrangement polyethylene and the third material arrangement, in turn, a diffusion barrier layer.
  • the material of the diffusion barrier layers may in turn be at least one of the above-cited materials having hydrocarbon diffusion barrierability. Preferably it is PA.
  • the first material arrangement and the third material arrangement in the solution according to claim 10 may comprise electrically conductive particles. This ensures that the nozzle (when the third material arrangement has essentially PE) is electrically conductive over its entire length in order to avoid electrostatic charging of the nozzle.
  • the first material arrangement can be produced by multilayer coextrusion, wherein at least one of the layers is electrically conductive. Since this electrically conductive layer is in contact with the third material arrangement, an electrical conductivity of the connecting piece over its entire length also results in this case.
  • nozzles are multi-layered and are used to connect a (only in Fig. 13 . 15 and 18 shown) fluid line, such as a hose made of diffusion-tight plastic, with a predominantly plastic container 1 for hydrocarbons, here a motor vehicle tank for gasoline or diesel oil, of which only one wall 2 is shown with a filling opening 3.
  • the fluid line may additionally have an electrically conductive additive against electrostatic charge.
  • Each nozzle also consists at least predominantly of thermoplastic material and is materially connected to the edge of the filling opening 3, here welded, so that there is a fusion connection between the nozzle and container 1.
  • the container-side end portion is provided with a circumferential flange 4 and the end portion facing away from the container 1 with a circumferential retaining rib 5.
  • the neck is a little thinner.
  • the container 1 is substantially HDPE (high density polyethylene) with a hydrocarbon barrier diffusion-resistant (not shown) intermediate layer of PA or EVOH
  • the second material arrangement 7 can be correspondingly adhesion-modified in order to achieve the fusion bond.
  • the thermoplastic material of the first material arrangement 6 may additionally comprise electrically conductive particles, for example of graphite or metal.
  • the second material arrangement 7 is preferably reinforced, for example with glass or carbon fibers.
  • the neck after Fig. 1 is made in such a way that in a first step, the first material assembly 6 by extrusion or injection molding into a flat sheet or plate or tube is formed, that in a second step, the film or plate by deep drawing or the tube by blow molding in a first preform with a nozzle contour is formed such that in a third step on one side of the first preform the second material arrangement 7 is applied by injection molding with nozzle contour, and that in the case of the first preform formed from the film or plate whose bottom is cut out before, in or after the third step.
  • Both material arrangements 6 and 7 can in this case, while maintaining the desired wall thickness of the nozzle, different thickness, i. e.g. the first material arrangement 6 is very thin, as is sufficient for a diffusion barrier layer, and the second material arrangement 7 is selected to be correspondingly thick, so that it serves as a support for the first material arrangement 6 and for achieving the desired strength of the connection piece and its connection to the container 1 can serve.
  • a particular advantage of this method is that in this way also material arrangements can be connected to each other, which can not be combined in only one injection process (in the coextrusion process), e.g. an axially continuous metal layer with a plastic layer, because of their very different melting temperatures.
  • Metal has a much higher melting temperature than thermoplastic so that the plastic would degrade at the higher melting temperature of the metal.
  • the first material array 6 is composed of a first layer 6a and a second layer 6b, which are melt-bonded, co-extruded, or layer by layer, by injection molding, to form the film, plate, or tube, and then again Cases the flat sheet or plate - deep drawn or - in the case of the tube - are blow-molded to form the nozzle-shaped first preform.
  • the first preform then becomes in turn with the second material assembly 7 in the same manner as in the embodiment Fig. 1 back-molded.
  • the thickness ratios can be selected similarly to the first embodiment.
  • the materials of the second material arrangement 7 are again selected as in the first embodiment, the materials of the layers 6a and 6b of the first material arrangement 6 are chosen differently, wherein the outer layer 6a in turn as a diffusion barrier layer of the same materials as the first material arrangement 6 after Fig. 1 and the middle layer 6b may be formed of a primer.
  • the layer 6b as a diffusion barrier layer and the outer layer 6a, for example, of PE or PA, wherein the middle layer 6b in turn must be compatible (fusible) with the layers 6a and 7.
  • first material arrangement 6 from the layers 6a and 6b by deep drawing or blow molding into the first preform
  • multi-component injection molding method one layer after another
  • the first material arrangement 6 consists of three layers 6a-6c, the materials of which are selected such that they form a fusion bond with the respectively adjacent layer.
  • layer 6b melts with the second material arrangement 7 a.
  • the layers 6a-6c are first coated in a coextrusion injection molding process or layer by layer by injection molding in a flat film or plate or a tube. From this layer arrangement, in turn, the first preform is formed by deep drawing or blow molding, which is then arranged in an injection mold and back-injected with the second material arrangement 7. From the deep-drawn, cup-shaped first preform, the bottom is cut out before, during or after the back-molding of the second material arrangement 7.
  • the layers 6a-6c are a total of at most as thick as the second material arrangement 7, when the wall thickness of the nozzle in turn is only equal to that of the first embodiment. Of the three layers 6a-6c, at least two are made of different materials, one of which is fusible with the second material arrangement 7.
  • the radially outer layer 6c is electrically conductive by an additive
  • the middle layer 6a is a barrier layer
  • the radially inner layer 6b is a bonding agent that allows the connection between the middle layer 6a and the second material arrangement 7, which in turn has PE around it can be connected to the container 1 by melting, but with a barrier layer as the middle layer 6a, which has, for example, PA or EVOH, no fusion bond, unless the PE of the second material assembly 7 is not so adhesion modified that it is a fusion bond with PA or PE received.
  • the outer layer 6c adhesion-modified PE, the middle layer 6a turn PA or EVOH and the second material assembly 7 also have adhesion-modified PE.
  • the PE of the outer layer 6c would then at the same total wall thickness compared to the second embodiment after Fig. 2 compensate for slightly smaller thickness of the second material assembly 7 to achieve the same strength of the nozzle.
  • Fig. 4 are the two material arrangements 6 and 7 with respect to those Fig. 1 reversed. That is, the first material assembly 6 is disposed radially inward and the second material arrangement outside, while the production in the same manner as in the first embodiment of Fig. 1
  • the material assembly 6 is produced as a first preform from a flat sheet or plate by deep drawing or from a tube by blow molding.
  • the second material arrangement 7 is then injection molded around the outside of the first preform by injection molding, the bottom of the deep-drawn mold being cut out before, during or after the second material arrangement 7 is sprayed around.
  • the materials of the two material arrangements 6 and 7 can again be the same as in the first embodiment.
  • Fig. 6 is also only the order of the materials 6 and 7 compared to the Fig. 3 reversed, while the manufacturing process and the materials of the material arrangements 6 and 7 opposite Fig. 3 have remained the same.
  • the order of materials 6 and 7 is also opposite to that of Fig. 1 reversed.
  • the second material arrangement 7 consists of two layers, a skin layer 7a and a core layer 7b, which is injected into the still plastic core of the skin layer 7a in the coinjection or monosandwich process, after the skin layer 7a around the first, as well as in the First embodiment, the preform-forming material assembly 6 has been injection-molded by injection molding.
  • the core layer 7b may comprise a reinforcing material, such as glass or carbon fibers, or, if the inner material assembly 6 forms a diffusion barrier layer of, for example, PA or EVOH, form an additional barrier layer.
  • the core layer 7b extends from the end portion with the retaining rib 5 of the nozzle over the thinner central portion of the nozzle to the flange 4 to form the middle, slightly thinner region with respect to the clamping pressure of the hose clamp higher load when forming the core layer 7b as a reinforcing layer.
  • the core layer 7b may alternatively also be formed as an additional diffusion barrier layer be when the first material assembly 6 is also formed as a diffusion barrier layer to increase the diffusion barrier ability of the nozzle.
  • Fig. 8 is different from that Fig. 7 only in that the core layer 7a is formed longer, so that it extends into the flange 4, to further increase the strength or diffusion barrier capability of the nozzle.
  • the first material arrangement 6 has a first layer 6a and a second layer 6b, each of which is produced from the first material arrangement 6 in the exemplary embodiment by the same method as the first preform Fig. 1 in the first and second steps to a first preform and a second preform are formed.
  • the two preforms 6a and 6b are then spaced apart with a desired thickness of the second material arrangement in a suitably shaped injection molding die, and then a first layer 7a of the second material assembly 7 is injection molded between the first preform and the second preform. that is, injected between the layers 6a and 6b, and injected into the still plastic core of the first layer 7a of the second material arrangement 7, a third layer 7b of the second material arrangement 7 in the coinjection or monosandwich method.
  • the outer layer 6a may include thermoplastic material with electrically conductive particles and the inner layer 6b may include diffusion barrier PA or EVOH while the layer 7a may comprise modified PE and the middle layer 7b may in turn comprise reinforcing material, but all adjoining layers may be fusible with each other.
  • the layer 7b is included in the material of the layer 7a, it is not necessarily required that the layer 7b be fused with the layer 7a.
  • the layer 7b can be injected further axially, for example as far as into or into the flange 4.
  • the nozzle is of a first nozzle-shaped material arrangement 6, which has three layers 6a, 6b and 6c, a second nozzle-shaped, but single-layered Material arrangement 7 and made of a third nozzle-shaped material arrangement 8 with three layers 8a, 8b and 8c. All arrangements consist at least predominantly of thermoplastic material.
  • the first material assembly 6 is made by the coinjection or monosandwich process as a first preform so that its outer layers 6a and 6b form a skin layer and its inner layer 6c forms a core layer about as thick to about twice as thick as each of the layers 6a and 6b.
  • the layers 6a and 6b comprise PE, while the layer 6c has a PA or EVOH and forms a diffusion barrier layer for hydrocarbons.
  • the second material arrangement 7 also has PE, so that it forms a fusion bond with the layer 6b.
  • the third material assembly 8 is also made by the coinjection or monosandwich process as a second preform so that its outer layers 8a and 8c form a skin layer and its inner layer 8b forms a core layer.
  • the layers 8a, 8c also have PE, while the inner layer 8b has a PA or EVOH, so that the latter forms a diffusion barrier layer for hydrocarbons.
  • the layer 8c with the material arrangement 7 forms a fusion connection, since they both have PE.
  • the layers 8a and 8c are about the same thickness
  • the layer 8b is about as thick to twice as thick as one of the layers 8a, 8c.
  • the material assemblies 6 and 8 can also in the coextrusion injection molding or their layers successively injection molded layer by layer in extrusion molding process to each other to a film or plate or hose and then the film or plate by deep drawing or the hose through Blow molds are formed to the first and second preform, after which the two preforms are then again arranged with a gap between them in a correspondingly shaped injection mold and the second material assembly 7 is injected into the gap.
  • their bottom can again be cut out before, during or after the injection of the second material arrangement 7, in order to obtain the nozzle form open at both ends.
  • it is possible, according to the embodiment Fig. 10 omit the first material arrangement 6 or the third material arrangement 8.
  • the material arrangements 6 and 8 as in the embodiment according to Fig. 10 in the coinjection or monosandwich process, but also the second material arrangement 7 after the completion of the first and second preforms in a mold are injected into the space between these two preforms in the coinjection or monosandwich process so that the outer layers 7a and 7c
  • the second material arrangement 7 likewise forms a skin layer of PE and the inner layer 7b forms a core layer of PA as a diffusion barrier layer and carrier layer.
  • the first material arrangement 6 forms on both sides of the core layer 6c a skin layer comprising PA and a core layer 6c comprising EVOH and thus a further diffusion barrier layer.
  • the third material assembly 8 may then comprise skin layers 8a and 8c of PE and a core layer 8b of EVOH as an additional diffusion barrier layer.
  • the PA-comprising core layer 7b of the second material assembly 7 is not fully injected into the PE as shown, up to the lower end of the PE forming the skin layer (s) 7a and 7c, it is a sufficiently large area of PE present, which can enter into a firm welding or fusion connection with the PE of the container 1.
  • the thickness ratios of the layer can be chosen so that the skin and core layers of the material arrangements 6 and 8, while maintaining the required wall thickness of the nozzle, about the same thickness, while the support layer 7b relatively thick, about as thick as their skin layer ( en) 7a, 7c (together) or thicker.
  • the first material arrangement 6 or the third material arrangement 8 can be omitted.
  • Fig. 12 represents the one half of a flange 4 of a nozzle produced according to a further embodiment of a method according to the invention in axial section.
  • the not shown, the container 1 facing away from the part is also provided with a holding rib, as in the previous embodiments.
  • the stub also has a first material arrangement 6 which is located radially outside or inside or, as shown, on both sides of a second material arrangement 7, and a third material arrangement 8 which, as in the previously described stubs, consists predominantly of thermoplastic material.
  • the first material arrangement 6 is single-layered and has a relatively small thickness. It surrounds the substantially thicker second material arrangement 7.
  • the third material arrangement 8 surrounds an end section 9 of the first and second material arrangements 6, 7, which therefore faces away from the surface 10 of the flange 4 to be connected to the container 1.
  • the material arrangements 6, 7 and 8 can in turn enter into a fused connection with one another.
  • the preparation of this nozzle is again done in such a way that in a first step, the first material assembly 6, ie the outer or inner or both, is formed by extrusion or injection molding into a flat sheet or plate or a tube.
  • the film or plate is again formed by deep drawing or the tube by blow molding into a preform, which the in Fig. 12 shown, having angled shape.
  • the transitions of the material arrangement 6 or of the preform formed from it do not have to pass over at an angle into the end section 9. The transitions can also be round.
  • the second material arrangement 7 is injection-molded (injection-molded) on one side of the preform formed from the outer or inner material arrangement 6 or both.
  • the third material arrangement 8 is injection-molded around the end section 9 of the first and second material arrangements 6, 7 by injection molding in the region of the flange 4. In this case, a not covered by the material arrangement 6 part 11 of the second material arrangement 7 by the third material arrangement 8 covered.
  • the preform formed from the sheet or plate its bottom is cut out before, in or after the third step.
  • the first material arrangement 6 comprises a diffusion barrier layer
  • the second material arrangement 7 polyethylene (PE)
  • the third material arrangement 8 likewise a diffusion barrier layer for hydrocarbons.
  • the diffusion barrier materials may also be the materials described in connection with the preceding embodiments. Preferably, it is PA or EVOH.
  • the first material assembly 6 and the third material assembly 8 contain electrically conductive particles, e.g. Particles of metal, graphite or carbon. Since the first material arrangement 6 and the third material arrangement 8 are in contact with each other, a layer which is conductive over the entire length of the connection results in the prevention of electrostatic charging of the connection piece.
  • electrically conductive particles e.g. Particles of metal, graphite or carbon. Since the first material arrangement 6 and the third material arrangement 8 are in contact with each other, a layer which is conductive over the entire length of the connection results in the prevention of electrostatic charging of the connection piece.
  • the first material arrangement 6 or its film or plate can also be produced in a multilayered manner in the first step in the coextrusion process, wherein at least one of the layers is electrically conductive.
  • the thicker second material arrangement 7 can enter via the large annular surface 10 with the PE also having at least outer layer of the container 3, a mechanically highly resilient, solid fusion bond by welding.
  • a further alternative may be that in the second material assembly 7, before it is fully cured, another layer is injected in the coinjection or monosandwich process.
  • the thinner material arrangement 6 lies on the inside and the thicker material arrangement 7 on the outside.
  • the material assembly 6 is about half the thickness of the material assembly 7, it may also be much thinner. It could also be somewhat thicker than shown, but in any case should be thinner than 70 ° of the thickness of the material arrangement 7.
  • the material arrangement 6 has predominantly one of the mentioned, compared to hydrocarbons, such as gasoline or diesel oil, diffusion-barrier plastic and contains an electrically conductive additive.
  • the additive can be particles of graphite, metal or carbon, for example carbon black, or so-called electrically conductive nanotubes. Nano-tubes have the advantage of being a relative have a large ratio of length to diameter of about 100, so that they almost certainly form over the entire length of the material assembly 6 continuous electrically conductive connection.
  • the amount of additive is chosen so that the electrical resistance of the material assembly 6 in the range of 100 ⁇ to 10 7 ⁇ , preferably about 1000 ⁇ to 10000 ⁇ , so that the material assembly 6 does not charge when filling the container 1 electrostatically ,
  • the material assembly 7 contains predominantly PE, which in contrast to the diffusion-barrier plastics with the HDPE of the container 1 forms a fusion bond.
  • At least one of the two material arrangements 6 and 7 is adhesion-modified, so that they also enter into a fused connection with each other. If the diffusion barrier plastic of the material assembly 6 is adhesively modified to melt into the PE of the material assembly 7, it may also fuse to the HDPE of the container 1.
  • the thicker material arrangement 7 is formed in a first mold cavity in a preform with the illustrated nozzle contour, ie with a longer cylindrical portion and the flange 4.
  • the thinner material assembly 6 in a second mold cavity in the illustrated nozzle contour formed and simultaneously formed on the first preform of the material assembly 7, in such a way that the thinner material assembly 6, the thicker material assembly 7 on the entire inner side of the facing away from the container 1 to the surface 10 facing away from the end of the material assembly 7 addition is melted and formed to the over the outside of the material assembly 7 protruding holding rib 5.
  • the fluid line 12 in the form of a hose to behind the Slide retaining rib 5 onto the connection piece and, if necessary, clamp it with a hose clamp 13. If the fluid line 12 also contains an electrically conductive additive, the entire connection from a fixed to the not-shown end of the fluid line 12 filler neck from the fluid line 12 and the material assembly 6 to the container 1 is electrically conductive, so that they are when filling the Can not charge container 1 electrostatically.
  • the conductive connection also extends into the container 1. Although this conductive layer would fuse the material arrangement 6 hinder or prevent the container 1. Because of its electrically conductive additive, however, the material arrangement 6 would also be without the conductive layer hardly connect the container 1 with this. However, since the material arrangement 7 is relatively thick compared to the material arrangement 6, the large-area connection between the material arrangement 7 and the container 1 can essentially determine solely the strength of the connection between the connection piece and the container 1. For the same reason, the material arrangement 7 as a carrier of the thin material arrangement 6 alone is able to ensure a sufficient mechanical strength of the nozzle.
  • the electrical connection between the fluid line 12 and the retaining rib 5 of the material arrangement 6 further makes it possible to keep the material arrangement 7 free of an electrically conductive additive which at least impairs the fusion connection between the material arrangement 7 and the container 1.
  • the material arrangement 7 it would also be possible for the material arrangement 7 to be thinner than the material arrangement 6 and essentially of a diffusion-barrierable plastic, with an electrically conductive additive, whereas the material arrangement 6 is much thicker than the material arrangement 7, essentially consisting of one with the plastic of the container 1 form meltable plastic without the overall contour of the nozzle would change as a result.
  • the electrically conductive connection would then lead via the material arrangement 7 to the container 1.
  • only a conductive layer of the container 1 would not be advisable from its opening 3 below the container side edge of the material arrangement 6 to or below the container side edge of the material arrangement 7, because then the material arrangement 6 would badly connect to the container 1.
  • the preform in the first step, the preform would be formed from the material arrangement 6 and in the second step the preform would be formed from the material arrangement 7 and at the same time melted onto the material arrangement 6, ie formed in the still molten state.
  • the embodiment of the neck after Fig. 14 - differs from the after Fig. 13 only in that the thinner material arrangement 6, except for an inner first layer 6c, formed of the same material as the thicker material assembly 7 and in the inside of the still molten portion of the material assembly 6 from the tip end of the layer 6c from one of the mentioned diffusion barrier plastics, preferably PA or EVOH, is injected in the coinjection or monosandwich process.
  • the layers 6a and 6b form a skin layer
  • the layer 6c forms a thinner core layer of the second preform extending over the entire length of the neck.
  • the skin layer is in turn provided with an electrically conductive additive, while the inner layer 6c may also be provided with a conductive additive and is adhesion-modified, so that it forms a fusion bond with the PE of the skin layer 6a, 6b.
  • the embodiment of the neck after Fig. 15 is different from that Fig. 13 only in that in the material arrangement 7 during the first step, a first layer 7b of one of the said diffusion-barrier-capable Plastics, preferably PA or EVOH, injected in the coinjection or monosandwich process.
  • the layer 7b extends from the end of the material arrangement 7, which faces away from the end to be welded to the container 1 and forms the gate, over more than 50%, preferably more than 90% and less than 100% of the length of the nozzle, up to the flange 4, that is not up to the end to be welded, so that the PE of the material assembly 7 can continue with the surface 10 on the container 1 when welding a firm fusion bond.
  • the layer 7b per se need not fuse with the PE of the (skin) layers 7a, 7c of the material assembly 7 because it is completely enveloped by the layers 7a, 7c of the material assembly 7.
  • the layer 7b may alternatively comprise another thermoplastic which is not capable of diffusion barrier but increases the mechanical strength of the material arrangement 7.
  • it may contain a reinforcing material, eg glass fibers or carbon fibers.
  • the material arrangement 6 is made up of the same layers 6a to 6c, in the same step and from the same materials as the material arrangement 6 Fig. 14 formed while the material assembly 7 in the embodiment according to Fig. 16 is designed as well as the material arrangement 7 of the embodiment according to Fig. 15 ,
  • the material arrangements 6 and 7 in the embodiments according to the Fig. 14 to 16 have at least one more in the coinjection or monosandwich process injected layer.
  • the embodiment of the neck after Fig. 17 is different from that Fig. 13 essentially in that both material arrangements 6 and 7 in the preparation of the nozzle - apart from the conductive additive, in the present case soot, in the material arrangement 6 - initially have PE and during the injection of the material assembly 6 in their still molten core (the " Soul "), while the existing skin of the layers 6a and 6b is already largely cured, from the injection point located at the tip end of the nozzle ago a first layer 6d, 6e is injected in Koinjetechnischs- or monosandwich process.
  • the first layer 6d, 6e has a PE grafted with maleic anhydride.
  • the layer 6d, 6e is adhesion-modified with respect to a PA or EVOH permeable to hydrocarbons, such as gasoline or diesel oil.
  • a second layer 6c is injected in the coinjection or monosandwich process.
  • This layer 6c has a PA or EVOH.
  • PA When PA is injected as layer 6c, its amino end group concentration is selected to be equal to or greater than 40 milliequivalents per kilogram.
  • the layer 6d, 6e goes not only with the PE of the material arrangement 6, but also with the Layer 6c a solid cohesive fusion. Since the container 1 PE or HDPE and the material assembly 7 also has PE, both continue to make a solid cohesive fusion with each other when the nozzle is welded to the container 1.
  • the material arrangement 6 in the layers 6a and 6b has a conductive additive, it does not enter into a very firm fusion connection with the container 1. In particular, it does not fuse with the container 1 if it has a conductive coating covering the opening 3 of the container 1 and its outside from the opening 3 to the radially outer edge of the container 1 facing the end of the material assembly 6, wherein a continuous conductive connection of the in Fig. 17 not shown fluid line 12 via the layer 6a, 6b into the container 1 is formed. Even if the amino end group concentration of the PA layer 6c is chosen equal to or greater than 40 milliequivalents per kilogram, it does not fuse with the (HD) PE of the container.
  • the diffusion barrier layer 6c is included in the material assembly 6 by the layers 6a and 6b, it is still advantageous to fuse and bond them to these layers 6a and 6b. Because it is possible that gasoline or diesel oil through the layer 6b between these and the Layer 6c diffused through and diffused by the diffusion and / or vapor pressure - the latter in particular at higher temperatures - of the diffusing fuel and by the different swelling behavior of PE and PA (PE swells more than PA), the layer 6b of the layer 6c.
  • non-maleic anhydride PE such as that of layers 6a and 6b has the advantage that it can be made more conductive by an electrically conductive additive, such as carbon black, than a PE modified with maleic anhydride.
  • the first layer 7d, 7e thus follows the same material as the first layer 6d, 6e Fig. 17 and the diffusion barrier layer 7b has the same material as the second layer 6c Fig. 17 on.
  • the radially outer skin layer 7a of the material arrangement 7 is additionally protected by the adhesion-modified layer 7d, 7e against lifting or releasing from the diffusion barrier layer 7b due to external mechanical forces, for example frictional forces acting on the layer 7a.
  • the embodiment of the neck after Fig. 19 replicates a combination of the layers of material assembly 6 Fig. 17 with the layers of the material arrangement 7 after Fig. 18 It therefore combines the advantages of both embodiments according to the FIGS. 17 and 18 and increases the diffusion barrier capability by using two diffusion barrier layers, that is, the two layers 6c and 7b.
  • both material arrangements can consist of plastics which enter into a material-locking fusion connection not only with each other but also with the container 1, in which case again only the one material arrangement, preferably the one radially inner material arrangement which is thinner than the radially outer material arrangement 7, the need to have the electrically conductive additive.
  • the container 1 comprises PE or HDPE
  • both material arrangements 6 and 7 may also comprise PE.
  • the entire nozzle can be produced more cost-effectively than with a single-layered design of the entire nozzle with a conductive additive, despite the material cost increasing conductive additive.
  • the material assembly 7 then has higher chemical resistance and stress cracking resistance due to the lack of conductive additive. Since both material arrangements 6 and 7 also enter into a cohesive fusion connection with the container, the molten plastic can form the conductive material arrangement 6 do not penetrate between the material assembly 7 and the container 1 and affect their connection to the container 1.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • General Engineering & Computer Science (AREA)
  • Injection Moulding Of Plastics Or The Like (AREA)
  • Laminated Bodies (AREA)
  • Blow-Moulding Or Thermoforming Of Plastics Or The Like (AREA)
  • Lining Or Joining Of Plastics Or The Like (AREA)
  • Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)

Claims (13)

  1. Procédé de fabrication d'un embout pour la liaison d'une conduite fluidique avec un récipient (1) en thermoplastique, l'embout présentant un premier ensemble de matériau (6) en forme d'embout, au moins monocouche et un second ensemble de matériau (7) en forme d'embout, au moins monocouche, dont le premier ensemble de matériau (6) est plus mince que le second ensemble de matériau et les deux présentent, comme constituant au moins principal, un matériau thermodéformable et réalisent une liaison par fusion l'un avec l'autre, le premier ensemble de matériau (6) étant formé dans une première étape dans le procédé de moulage par extrusion ou injection en une feuille plane ou une plaque ou en un tuyau, la feuille ou la plaque étant formée dans une deuxième étape par emboutissage profond ou le tuyau par moulage par soufflage dans une première ébauche avec un contour d'embout, le second ensemble de matériau (7) étant appliqué dans une troisième étape sur un côté de la première ébauche dans le procédé de moulage par injection, de coinjection ou monosandwich avec un contour d'embout, et dans le cas de la première ébauche formée dans la feuille ou la plaque, son bord devant être découpé avant, pendant ou après la troisième étape, caractérisé en ce que le second ensemble de matériau (7) présente une couche centrale (7b) et une couche de peau (7a) qui sont fabriquées dans le procédé de coinjection ou monosandwich, et en ce que la couche de peau (7a) et le premier ensemble de matériau (6) réalisent une liaison par fusion, étant donné qu'ils sont compatibles, la couche de peau (7a) présentant du PE et la couche centrale (7b) étant une couche de barrage de diffusion par rapport aux hydrocarbures, qui présente au moins l'un des matériaux suivants PA, EVOH, PET, PBT, PBN, PEN, POM, thermoplaste fluoré et PPS.
  2. Procédé selon la revendication 1, caractérisé en ce qu'une première couche (6 ; 6a) et une seconde couche (7 ; 6b) et éventuellement une troisième couche (6c) qui réalisent une liaison par fusion, sont superposées dans le procédé de coextrusion ou couche par couche dans le procédé de moulage par injection dans la première étape afin de former la feuille, la plaque ou le tuyau.
  3. Procédé selon la revendication 2, caractérisé en ce que l'une des couches formées dans la première étape est un agent adhésif ou une couche de barrage de diffusion par rapport aux hydrocarbures, qui présente au moins l'un des matériaux suivants PA, EVOH, PE, PET, PBT, PBN, PEN, POM, PP, thermoplaste fluoré, PPS et métal, et en ce que le second ensemble de matériau (7) est appliqué sur la seconde couche (6b) et présente au moins l'un des matériaux suivants PE, PP, PA, PBT, PET, PBN et POM.
  4. Procédé selon la revendication 2 ou 3, caractérisé en ce qu'une autre des couches formées dans la première étape présente au moins l'un des matériaux suivants PA, EVOH, PET, PBT, PBN, PEN, POM, PP, thermoplaste fluoré, PPS et une couche thermoplastique rendue électroconductrice par un additif électroconducteur.
  5. Procédé selon l'une quelconque des revendications 1 à 4, caractérisé en ce que le second ensemble de matériau (7) est appliqué sur le côté intérieur ou le côté extérieur de la première ébauche.
  6. Procédé selon la revendication 1, caractérisé en ce que la couche de barrage de diffusion (7b) présente un matériau de renforcement, en particulier des fibres de verre.
  7. Procédé selon la revendication 1, caractérisé en ce que la couche de peau (7a) (en une seule partie) est appliquée sur le côté extérieur ou le côté intérieur de la première ébauche et le second ensemble de matériau (7) est formé dans une première section d'extrémité à relier avec le récipient (1) comme une bride (4) et dans une seconde section d'extrémité à l'extérieur avec au moins une nervure de retenue (5) et en ce que la couche centrale (7b) est injectée dans la section d'extrémité nervurée et jusqu'à ou dans la bride (4).
  8. Procédé selon la revendication 1, caractérisé en ce que le premier ensemble de matériau (6) présente une première couche (6a) et une seconde couche (6b) qui sont formées respectivement selon la première étape et la deuxième étape en la première ébauche et une seconde ébauche, et en ce que dans la troisième étape, une première couche du second ensemble de matériau est injecté dans le procédé de moulage par injection entre la première et la seconde ébauche et dans une quatrième étape, une troisième couche est injectée dans l'âme encore plastique de la première couche du second ensemble de matériau (7) de sorte que la première couche (7a) du second ensemble de matériau (7) forme une couche de peau et la troisième couche (7b) une couche centrale.
  9. Procédé selon la revendication 2, caractérisé en ce que dans la première étape, trois couches (6a-6c) du premier ensemble de matériau (6) sont formées en la feuille, la plaque ou le tuyau afin de former dans celui-ci la première ébauche (6) selon la deuxième étape, et en ce qu'une seconde ébauche (8) à trois couches formée par répétition des étapes 1 à 3 est disposée conjointement avec la première ébauche (6) à trois couches dans un outil de moulage en préservant un espace intermédiaire entre les ébauches (6, 8) et le second ensemble de matériau (7) est injecté dans l'espace intermédiaire sous la forme d'une couche de peau (7a, 7c) et d'une couche centrale (7b) dans le procédé de coinjection ou monosandwich.
  10. Procédé de fabrication d'un embout pour la liaison d'une conduite fluidique avec un récipient (1) en thermoplastique, l'embout présentant un premier, un deuxième et un troisième ensembles de matériau symétriques en rotation, lesquels se composent chacun principalement de thermoplastique, le premier ensemble de matériau (6) étant au moins monocouche, plus mince que le deuxième ensemble de matériau et entourant le deuxième ensemble de matériau (7), le troisième ensemble de matériau (8) entourant le premier ensemble de matériau (6), le premier, le deuxième et le troisième ensemble de matériau (6, 7, 8) étant reliés par une liaison par fusion et formant une bride (4) de l'embout du côté du récipient (1) et le premier ensemble de matériau (6) ainsi que le deuxième ensemble de matériau (7) parvenant jusqu'à une surface (10) de la bride (4) à relier avec le récipient (1), caractérisé en ce que dans une première étape, le premier ensemble de matériau (6) est formé dans le procédé de moulage par extrusion ou injection en une feuille plane ou une plaque ou en un tuyau, en ce que dans une deuxième étape, la feuille ou la plaque est formée par emboutissage profond ou le tuyau par moulage par soufflage dans une ébauche, en ce que dans une troisième étape, le deuxième ensemble de matériau (7) est appliqué sur un côté de l'ébauche dans le procédé de moulage par injection, en ce que dans une quatrième étape, le troisième ensemble de matériau (8) est injecté autour d'une section d'extrémité (9) éloignée de la surface (10) à relier avec le récipient (1) du premier et deuxième ensemble de matériau (6 ; 7) dans le procédé de moulage par injection dans la zone de la bride (4) et en ce que dans le cas de l'ébauche formée dans la feuille ou la plaque, son bord est découpé avant, pendant ou après la troisième étape, le premier ensemble de matériau (6) présentant une couche de barrage de diffusion, le deuxième ensemble de matériau (7) du PE et le troisième ensemble de matériau (8) une couche de barrage de diffusion.
  11. Procédé selon la revendication 10, caractérisé en ce que le premier ensemble de matériau (6) présente une couche de barrage de diffusion, le deuxième ensemble de matériau (7) du PE et le troisième ensemble de matériau (8) une couche de barrage de diffusion.
  12. Procédé selon la revendication 10 ou 11, caractérisé en ce que le premier ensemble de matériau (6) et le troisième ensemble de matériau (8) présentent des particules électroconductrices.
  13. Procédé selon l'une quelconque des revendications 10 à 12, caractérisé en ce que dans la première étape, le premier ensemble de matériau (6) est fabriqué en plusieurs couches dans le procédé de coextrusion, au moins l'une des couches étant électroconductrice.
EP05023834A 2004-12-24 2005-11-02 Procédé de fabrication d'un embout Active EP1674232B1 (fr)

Priority Applications (1)

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EP08017864A EP2030755B1 (fr) 2004-12-24 2005-11-02 Procédé de fabrication d'un manchon

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DE102004062587 2004-12-24
DE102005042678A DE102005042678A1 (de) 2004-12-24 2005-09-08 Verfahren zur Herstellung eines Stutzens

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EP1674232A2 EP1674232A2 (fr) 2006-06-28
EP1674232A3 EP1674232A3 (fr) 2007-10-10
EP1674232B1 true EP1674232B1 (fr) 2011-06-29

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EP08017864A Active EP2030755B1 (fr) 2004-12-24 2005-11-02 Procédé de fabrication d'un manchon

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EP (2) EP1674232B1 (fr)
JP (2) JP4356691B2 (fr)
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Publication number Publication date
EP2030755A1 (fr) 2009-03-04
EP1674232A3 (fr) 2007-10-10
CN100591515C (zh) 2010-02-24
DE102005042678A1 (de) 2006-07-06
KR20060073504A (ko) 2006-06-28
EP1674232A2 (fr) 2006-06-28
JP2006192894A (ja) 2006-07-27
ES2376136T3 (es) 2012-03-09
CN1807072A (zh) 2006-07-26
JP2009061781A (ja) 2009-03-26
US8303877B2 (en) 2012-11-06
JP4356691B2 (ja) 2009-11-04
US20060141838A1 (en) 2006-06-29
JP4795416B2 (ja) 2011-10-19
EP2030755B1 (fr) 2011-12-28
KR100678587B1 (ko) 2007-02-02

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